Folding chair



July 25, 1933. w. QRAsTETTr-:R 1,919,746

n FOLDING `CHAIR Filed March 20, 1931 2 Sheets-Sheet l l i i Y11111111111 ATTORNEY July 25, 1933. Aw. c. RASTETTER FOLDING CHAIR 2Sheets-Sheet 2 Filed March 2o, 1951 g @mimi/5mm.

- BY A ATTORNEY.

Patented July 25, 1933 UNITED STATES PATENT OFFECE WILLIAM ennsfrnrrnn,oFjFoRfr WAYNE,l INDIANA FOLDING CHAIRv ApplicationA mea March, 2o,1931.. semi No. 524,043.'

iiledSeptember 29, 1930ffor Folding chairs,

and is distinguished therefrom particularly y in the means whereby theYfolding move-I ments of the seatandrear ylegs are limited and inseveral other respects as will appear inthe following description. i

An illustrative embodiment of the iiivention is shown in the`accompanying drawings, vin which: l Y Fig. l is a side elevation of achair strncture in which the Viiiventioiifis embodied,

the chair being in' extended vposition and portions thereof beingbrokenaway;

2 is a detail view upon an enlarged scale of the connection betweenthestoprod and the seatframeportions being in section; i

Fig. 8 is another detailview uponaii-enf larged scale showing the mannerof securing the seat-frame on the seat-rod, lparts beingv in section;

Fig. 4 is a rear elevation of the chair in folded position; n y

Fig. 5 is a detail view upon an enlarged scale'of a guide shown invertical section and a stop-rod in connection therewith;

Fig. 6 is an elevation upon an enlarged scale ofthe guide showing theouter face thereof, a portion being broken away; and

Fig. 7 is an enlarged detail fragmentary view of the stop-rod and crossbrace for the rear legs.

The chair shown in the illustrative em` bodiment of the invention iscomprised of a main frame 1 having side members2 constituting forelegs,there being secured in the upper end portions of said frame a backrest3. In said forelegs is secured a trans- Athe seat-rod 4v folding orversely disposed seat-rod '4, and upon said seat iod is pivotedlysupported a seat frame 5 preferably formed of a single stri-p bent so asto have lparallel side members 6, in` which permanentlysecured a. seat7. L'. Upon the inner face of each side member is disposed aplate8through which therod 4 extends and against which the corresponding.upper ends of a cross-,brace 9 bear, said rod 4 also extending throughsaid upper ends of the brace. A tubular spacer l0 is.

y positioned upon 'the rod 4 Awith itsrespective ends extending tothecorresponding upper ends of said cross-brace. Upon 'the outer face ofeach side ineinbei 6 `of theseat- 65. frame is disposed a plate 11through which the rod 4 extends, each plate having at its reai endopposed ears 12 and 13 between which the corresponding 'ends of the sidemembers are-secured by meansA of a rivet 14. Uponsthe rod 4between vtheplate ll and' the adjacent inner face .of thecorrespoiiding foreleg. 2is disposed `a tubular spacer l5 whereby the seat-frame'is heldcentrally within the frame l spaced 'from theforelegs. Thelower ends ofthe braces 9 are securedrespectively to the inner yfaces of the forelegs2, asr indica-ted. by 9', so that the cross-brace sustains theseat-frame in its central position relative to the framel.

To each foreleg 2,*upon thejinner face' thereof at a point above theseat-rod 4is pivoted, as indicatedby 16. a rear leg 17, and each rearleg is connected with the'orresponding side member 6 of theseat-fraineby a link v18, the forward ends vof said links being' pivoted tothecorresponding sides of theseat-frame through the plates l1 thereon atpoints between theseat rod 4 and the rear ends kof the side members 6,as indicated by 19." The oppositeends of said links are pivoted to thecorresponding rear legs upon the innerV faces thereof as indicated by20. Vhen the seat Vis turnedpivotedly upon v unfolding movement isimparted to the rear legs 17 yaccordingly. y' p To the lower endportions ofV each rear leg upon the inner face thereof is disposedaguide member 21 having a longitudinally ioo v slotted embossment 22,the upper end of which is closed and the lower end of which is open, anda cross-brace 23 is secured together with said guide members to saidrear legs by means of rivets 24. Y

Each of he plates 11 has formed upon its outer face adjacent the rearend thereof a perforated embossment 25 inwhich is pivotedly secured astop-rod 26, the upper end of which rod has formed thereon a bent prong27 that engages in the corresponding embossment so that the rod haspivotal connection with the rear end of the seat-frame. The opposite endof each stoprod 26 has an elbow 28 that projects through the slot 29 ofthe embossment 22 on the corresponding guide member, and upon theextremity of the elbow is formed a head 30 which is dis-y posed withinthe embossment and has sliding movement therein when the rod is movedvertically relative to the guide member. Each upper arm oi the brace 23has a slot 3l made therein through which the rod 26 has slidingmovement, said slot being elongated to permit the prong 27 to be passedtherethrough, and the lowerend .of the embossment being open to permitthe head 30 to be inserted therein when the rod is being assembled inthe chair structure.

A feature ol the invention is the relative arrangement of thecross-brace 9, the torelegs Q, the seatrod 4 and the seat-frame 5whereby the seat-rod receives support from the 'torelegs and thecross-brace and the sides 6 of the seat-frame are suspended upon' therod respectively at points between the upper ends oir' the cross-braceand the forelegs correspondingly. In this manner the seat-rod issustained ixedly in position by the 'forelegs and the cross-bracewhereby an unyielding support for the seat frame is afforded and bendingofthe seat rod is obviatedwhen the chair is subjected to the weight ofthe occupant. Y

I claim:

l. In a folding chair, a main frame oon stituting a back and orelegs,rear legs pivoted to said main frame, a seat rod the ends of which aresecured in said main frame at points therein below the rear by pivots, aseat-frame pivoted on said seat-rod, means connecting the seat-frame andthe rear legs for imparting movement to said rear legs rearwardly as theseat is extended for use, a guide member having a longitudinally slottedembossment on the inner face ot each rear leg, a cross-brace connectingsaid rear legs the upper arms of which have each a rslot therein, andstop-rods pivoted to the rear end of said seat-frame extendingrespectively through lthe apertures in said crossbrace and having a headslidably engaged in the embossment of the corresponding guide memberinwhich it is confined and has limited movement.

2. In a folding chair, a main frame con stituting a back and forelegs,rear legs pivoted to said main frame', a'seat rod the ends of which aresecured in said main frame at points therein below theV rear leg pivots,a seat-trame pivoted on said seat-rod, means connecting the seat-frameand the rear legs for imparting movement to said rear legs rearwardly asthe seat is extended for use, a guide member having a longitudinallyslotted embossment on the inner face of each rear leg, and stop-rodspivoted to the rear end of said seat-frame each having a head slidablyengaged'in the embossinent of the corresponding guide member in which itis confined and has limited movement.

3. In a folding chair, a main frame, a seat pivoted in the frame, a rearleg structure pivotedlyl connected in the frame at pointsv above theseat pivots, a guide member disposed upon each of the legs of said rearleg structure having a longitudinal slot, and stop-rods pivoted on therear end of said seat, the lower end of each of said stoprodsvbeingconfined in the corresponding guide and having limited sliding movementtherein.

WILLIAM C. RASTETTER.

TUO

